Default font setting when different language

[willser]

For now.There are only one seeting about font family.It's zh-CN.

weaver/src/setting.rs

Lines 153 to 163 in 9e097f3

	pub fn get_default_font() -> String {
	if let Some((_, lang)) = locale_config::Locale::current().tags().next() {
	let lang_str = lang.to_string();
	match lang_str.as_str() {
	"zh-CN" => {
	return "Microsoft YaHei UI".to_string();
	}
	_ => {}
	}
	}
	"".to_string()

It's very helpful if add more language.